19-20高一·全国·课后作业
1 . (1)“
”是“
”的__________ 条件;
(2)“
”是“
”的________ 条件;
(3)已知
、
,则“
”是“
”的_______ 条件;
(4)设
、
,若
;
.则
是
的______ 条件;
(5)若
、
、
是常数,则“
且
”是“对任意
,有
”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
(2)“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efcf268fb9d95f033c196f72ca517351.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8482fdda1726850b60ba214708691d5e.png)
(4)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48e53ecd2f8f2517a2014fb02a3c000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb0294400e34b945e410496cd8680ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(5)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9deb79d044a379f31a8fc57736d7ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
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19-20高一·全国·课后作业
2 . 集合
,则“
或
”是“
”的_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe07d38343dccdff99c77ba326353c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
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19-20高一·全国·课后作业
3 . 已知命题:①“
,
”是“
,
”的充要条件;②“
”是“
”的充分不必要条件;③
、
,“
”是“
”必要不充分条件;④“
”是“
,
”的充分不必要条件.其中真命题的个数是________ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939a663176acba10401782b7fe13a7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b89bc88a09267ffc190ee85f2577fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9febcce640dc7d51fabd540db9246629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b16b91037706568b715b30216f1cfc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0527f3801a1f5fae326d9411555b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d480f0fe759b6773d568ea7bcd2f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133ef30d7e5827cc5534daf4dba32741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77cdb8806a697e8e5480fad9c380baa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890a69d80947532fb946a8bf2bf5db0.png)
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19-20高一·全国·课后作业
4 . 写出“
”的一个充分不必要条件__________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55172048f0cc0a91ed73d07965a468b6.png)
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19-20高一·全国·课后作业
5 . 已知四个命题:①
是函数
是奇函数的必要非充分条件;②若
、
,则
是
的充分非必要条件;③
、
是
的两内角,则
是
的充要条件;④两条直线的斜率相等是这两条直线平行的既不充分也不必要条件.其中为真命题的有_________ (把你认为是真命题的序号都填上).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd8e8956713d6588b9e7ecff3c8aea0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fbf4fa588e619ff6399c7a21b8166c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54dad48527a47eab4a5916ab0421cc71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dccf7fdc9ff5e9e6ed897ec3a716a35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69245c459dcf2d67cd2c24557abc92ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d0b9c0c01b49be6e08a111568f77f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b2f44bda467c786287c7356d4ed9f7.png)
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19-20高一·全国·课后作业
6 . “
”是“函数
的最小正周期为
”的___________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19432f778cf5f31660692272cd599df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
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19-20高一·全国·课后作业
7 . 设命题甲为:“
”,命题乙:“
”,则甲是乙的______________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1cbe05135aa82bd9ce0f4885cf73bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1af963126dde75a96b8518ba3eadec.png)
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20-21高一上·全国·课后作业
8 . “
”是“一元二次方程
有实数解”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3a4e1167b63a52f11da046cf041902.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed96a4869723b318e458de59d80342e8.png)
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19-20高一·全国·课后作业
9 . 在
,
,
中,使
的充分条件是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f22fec5a381ae8aca93d876e54c79de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec8f6a68e0710eb8da47d9f2039c640.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cfeda8c76660badd8b428b3510d68d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5821f59d12217af9a3804379c8231f.png)
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10 . 从“充分条件”“必要条件”中选出适当的一种填空:
(1)“a
+bx+c=0(a≠0)有实根”是“ac<0”的________ .
(2)“△ABC≌△A′B′C′ ”是“△ABC∽△A′B′C′ ”的________ .
(1)“a
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
(2)“△ABC≌△A′B′C′ ”是“△ABC∽△A′B′C′ ”的
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